Early maturation of sound duration processing in the infant’s brain

The ability to process sound duration is crucial already at a very early age for laying the foundation for the main functions of auditory perception, such as object perception and music and language acquisition. With the availability of age-appropriate structural anatomical templates, we can reconst...

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Bibliographic Details
Published in:Scientific reports 2023-06, Vol.13 (1), p.10287-10287, Article 10287
Main Authors: Polver, Silvia, Háden, Gábor P., Bulf, Hermann, Winkler, István, Tóth, Brigitta
Format: Article
Language:English
Subjects:
631/378/2619/2618
631/378/2649/1723
Acoustic Stimulation
Auditory Cortex
Auditory Perception
Brain
Electroencephalography - methods
Event-related potentials
Evoked Potentials
Evoked Potentials, Auditory
Humanities and Social Sciences
Infants
Language
multidisciplinary
Pattern recognition
Reproducibility of Results
Science
Science (multidisciplinary)
Sound
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Summary:The ability to process sound duration is crucial already at a very early age for laying the foundation for the main functions of auditory perception, such as object perception and music and language acquisition. With the availability of age-appropriate structural anatomical templates, we can reconstruct EEG source activity with much-improved reliability. The current study capitalized on this possibility by reconstructing the sources of event-related potential (ERP) waveforms sensitive to sound duration in 4- and 9-month-old infants. Infants were presented with short (200 ms) and long (300 ms) sounds equiprobable delivered in random order. Two temporally separate ERP waveforms were found to be modulated by sound duration. Generators of these waveforms were mainly located in the primary and secondary auditory areas and other language-related regions. The results show marked developmental changes between 4 and 9 months, partly reflected by scalp-recorded ERPs, but appearing in the underlying generators in a far more nuanced way. The results also confirm the feasibility of the application of anatomical templates in developmental populations.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-36794-x